15cm long design makes it flexible and long enough to extend and read SD cards. Support that need to be used to convert the memory card TF (Micro-SD) extended out to SD memory card (such as car GPS navigator data upgrade, some instrumentation data update, etc.) Fast reading speed: SD card extension never affects the reading and writing speed of the machine, keeping the efficiency and safety of the machine. It can also be used as an expander or linker when your device has a built-in micro-SD memory card slot and you need to expand it externally to use a larger SD memory card. Cables are flexible and easy to install. Type: Extension Cable Operating voltage: DC 12V Interface: TF Support memory card: TF,MicroSD Installation method: external color:Black Material:ABS+FFC size:15cm Package Contents: 2 x Extension Cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.